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kernel/linux-imx6_3.14.28/arch/x86/video/fbdev.c 895 Bytes
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
   *
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file COPYING in the main directory of this archive
   * for more details.
   *
   */
  #include <linux/fb.h>
  #include <linux/pci.h>
  #include <linux/module.h>
  #include <linux/vgaarb.h>
  
  int fb_is_primary_device(struct fb_info *info)
  {
  	struct device *device = info->device;
  	struct pci_dev *pci_dev = NULL;
  	struct pci_dev *default_device = vga_default_device();
  	struct resource *res = NULL;
  
  	if (device)
  		pci_dev = to_pci_dev(device);
  
  	if (!pci_dev)
  		return 0;
  
  	if (default_device) {
  		if (pci_dev == default_device)
  			return 1;
  		else
  			return 0;
  	}
  
  	res = &pci_dev->resource[PCI_ROM_RESOURCE];
  
  	if (res && res->flags & IORESOURCE_ROM_SHADOW)
  		return 1;
  
  	return 0;
  }
  EXPORT_SYMBOL(fb_is_primary_device);
  MODULE_LICENSE("GPL");